Intel Core 7 251TE vs Intel Core Ultra 5 250KF Plus Comparison

Head-to-Head Benchmarks

The Intel Core Ultra 5 250KF Plus dominates the Core 7 251TE across nearly every recorded workload, winning 16 of 17 benchmark comparisons. The sole exception is integer math, where the Core 7 251TE edges ahead by 2.2%, scoring 125,739 versus 123,030. That narrow win does little to offset the scale of the Ultra 5's victories elsewhere.

The most dramatic gaps appear in Cinebench testing. The Ultra 5 250KF Plus posts 42,718 in Cinebench R23 multi-core against 25,518 for the Core 7 251TE, a 40.3% advantage. Single-core R23 shows the same 40.3% delta, with 6,030 versus 3,602. The pattern repeats in Cinebench R20 (17,941 versus 10,717), R15 multi-core (4,305 versus 2,572), and R15 single-core (607 versus 362), each carrying the same 40.3% margin. This consistency across all three Cinebench versions indicates a fundamental per-thread and multi-thread performance gap, not a workload-specific artifact.

PassMark results reinforce the trend. The Ultra 5 leads multi-thread performance by 40.1% (50,146 versus 30,022) and single-thread by 24.1% (4,698 versus 3,568). Physics testing shows a 39.1% gap (3,183 versus 1,938). Data encryption favors the Ultra 5 by 46.3%, with 41,292 versus 22,176. Floating point math runs 46.4% faster on the Ultra 5 (159,824 versus 85,607). Extended instruction throughput shows the largest single gap at 60.4% (42,880 versus 16,974), and prime number searching trails by 69% (452 versus 140). Random string sorting completes 67,209 operations versus 39,643, a 41% difference. Data compression sees 553,155 versus 334,399, a 39.5% gap.

The average benchmark score quantifies the overall position: the Ultra 5 250KF Plus sits at 66,159, while the Core 7 251TE records 41,650. That places the Core 7 at the 88th percentile of all CPUs, with nearest rivals including the Core Ultra 7 265H (0.1% ahead), Core i7-14650HX (0.2% ahead), Core i7-12850HX (0.3% behind), and Core i7-14700T (0.6% behind). The Ultra 5 reaches the 93rd percentile, with its closest competitors being the Core 9 273PQE (0.1% ahead), AMD Ryzen 9 7950X3D (0.4% ahead), Core Ultra 5 250K Plus (1% behind), and AMD EPYC 4465P (1.1% behind). The 20-point percentile gap between these two processors translates into a roughly 59% higher average score for the Ultra 5.

FAQ

Q: Which processor wins more benchmark comparisons?

A: The Intel Core Ultra 5 250KF Plus wins 16 of 17 head-to-head tests. The Intel Core 7 251TE wins only passmark integer math, by 2.2%.

Q: What is the biggest performance difference between the two?

A: The largest gap is in passmark find prime numbers, where the Ultra 5 250KF Plus leads by 69% (452 versus 140). Extended instructions follow at 60.4% (42,880 versus 16,974).

Q: How do the Cinebench scores compare?

A: The Ultra 5 250KF Plus leads the Core 7 251TE by exactly 40.3% in all six Cinebench tests: R15 multi-core (4,305 versus 2,572), R15 single-core (607 versus 362), R20 multi-core (17,941 versus 10,717), R20 single-core (2,532 versus 1,512), R23 multi-core (42,718 versus 25,518), and R23 single-core (6,030 versus 3,602).

Q: Does the Core 7 251TE have any advantage in single-thread performance?

A: No. The Ultra 5 250KF Plus leads single-thread tests by 24.1% in passmark singlethread (4,698 versus 3,568) and by 40.3% in Cinebench R23 single-core (6,030 versus 3,602).

Q: How do the two processors rank among all CPUs?

A: The Core 7 251TE sits at the 88th percentile, while the Ultra 5 250KF Plus reaches the 93rd percentile. Their average benchmark scores are 41,650 and 66,159 respectively.

Q: Which processor has a higher boost clock?

A: The Core 7 251TE boosts to 5.40 GHz, which is 0.10 GHz higher than the Ultra 5 250KF Plus at 5.30 GHz. Despite this, the Ultra 5 wins all single-thread benchmarks.

Architecture Differences

The two processors come from different manufacturing and design generations. The Core 7 251TE uses the Bartlett Lake architecture on Intel's 10 nm process, with a die size of 215 mm². The Ultra 5 250KF Plus is built on Arrow Lake Refresh, fabricated by TSMC at 3 nm, with a die size of 243 mm² and 17,800 million transistors. The newer 3 nm process gives the Ultra 5 a density and efficiency foundation that the 10 nm Bartlett Lake cannot match.

Core counts and thread counts differ substantially. The Core 7 251TE packs 24 cores and 32 threads, while the Ultra 5 250KF Plus has 18 cores and 18 threads. The Core 7's higher thread count comes from hyperthreading, which the Ultra 5 does not use. Despite fewer threads, the Ultra 5 delivers far higher multi-thread scores, indicating that its 18 full-size cores outperform the Core 7's 24 threaded cores in raw throughput.

Cache hierarchies differ in both capacity and per-core allocation. The Core 7 251TE has 80 KB of L1 per core, 1.25 MB of L2 per core, and 36 MB of shared L3. The Ultra 5 250KF Plus has 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3. The Ultra 5's larger per-core L1 and L2 caches likely contribute to its single-thread advantage, while the Core 7's larger L3 pool does not compensate in the recorded benchmarks.

Memory support splits along generational lines. The Core 7 251TE supports both DDR4 and DDR5 with dual-channel access and 89.6 GB/s bandwidth. The Ultra 5 250KF Plus supports only DDR5 but runs dual-channel at 115.2 GB/s, a 28.6% higher memory bandwidth. Both support ECC memory. The PCIe configuration also differs: the Core 7 provides Gen 5 with 16 CPU lanes, while the Ultra 5 provides Gen 5 with 20 CPU lanes.

Integrated graphics separate the two as well. The Core 7 251TE includes UHD Graphics 770, while the Ultra 5 250KF Plus has no integrated graphics (N/A). The Ultra 5 compensates with an unlocked multiplier, whereas the Core 7's multiplier is locked. Socket compatibility differs: the Core 7 uses Intel Socket 1700, the Ultra 5 uses Intel Socket 1851.

Power envelopes diverge sharply. The Core 7 251TE has a 45 W TDP, while the Ultra 5 250KF Plus draws 125 W TDP. That 80 W difference explains the performance gap but also signals different platform requirements. The Core 7's low TDP suits constrained thermal environments, while the Ultra 5 demands more substantial cooling and power delivery.

The Verdict

The benchmark data points to a clear hierarchy. The Intel Core Ultra 5 250KF Plus is the outright performance winner across nearly every workload category, from Cinebench rendering to PassMark encryption, physics, compression, and extended instructions. Its average benchmark score of 66,159 versus 41,650 gives it a 59% overall advantage. The 93rd percentile ranking versus the 88th percentile confirms its higher standing among all CPUs.

The Core 7 251TE has exactly one benchmark win: integer math, with a 2.2% margin. That result does not establish a pattern. The Ultra 5's wins are consistent, often by 40% or more, and appear in both single-thread and multi-thread tests. Even the Core 7's higher boost clock (5.40 GHz versus 5.30 GHz) and larger L3 cache (36 MB versus 30 MB) fail to produce a single-thread win.

The Ultra 5's advantages stem from its newer 3 nm process, larger per-core caches, higher memory bandwidth, and 20 PCIe lanes. Its 125 W TDP and lack of integrated graphics mean it requires a discrete GPU and a robust cooling solution. The Core 7's 45 W TDP and UHD Graphics 770 allow for a more self-contained, lower-power build, but the data shows a substantial performance cost for that efficiency.

Specification Differences

The two processors differ in nearly every core specification. The Core 7 251TE has 24 cores and 32 threads; the Ultra 5 250KF Plus has 18 cores and 18 threads. Base clocks are 1.40 GHz versus 4.20 GHz, a 2.80 GHz difference. Boost clocks are closer: 5.40 GHz versus 5.30 GHz. TDP ranges from 45 W on the Core 7 to 125 W on the Ultra 5.

Process technology separates them by node and foundry: the Core 7 uses Intel's 10 nm, the Ultra 5 uses TSMC's 3 nm. Die sizes are 215 mm² versus 243 mm². The Ultra 5 lists 17,800 million transistors; the Core 7 does not list a transistor count. Cache differs per core and total: L1 is 80 KB versus 192 KB per core, L2 is 1.25 MB versus 3 MB per core, L3 is 36 MB versus 30 MB shared.

Memory support: the Core 7 handles DDR4 and DDR5, the Ultra 5 handles only DDR5. Both are dual-channel, but bandwidth is 89.6 GB/s versus 115.2 GB/s. PCIe lanes: 16 versus 20, both Gen 5. Integrated graphics: UHD Graphics 770 versus N/A. ECC: both support it. Multiplier: locked versus unlocked. Sockets: 1700 versus 1851. Release dates: January 12, 2025 versus March 10, 2026. Launch MSRP: the Core 7 251TE launched at $384, the Ultra 5 250KF Plus at $184.

Where Each One Wins

The Intel Core Ultra 5 250KF Plus wins in rendering, single-thread responsiveness, encryption, compression, physics, floating-point math, extended instruction workloads, and prime number computation. Cinebench R23 multi-core at 42,718 versus 25,518 indicates that content creation and 3D rendering tasks favor the Ultra 5 by a wide margin. PassMark data compression at 553,155 versus 334,399 suggests archive and file-handling workloads also run faster on the Ultra 5. Data encryption at 41,292 versus 22,176 points to the Ultra 5 for security-focused tasks. Physics simulation at 3,183 versus 1,938 favors the Ultra 5 for scientific and engineering computations. The 60.4% lead in extended instructions and the 69% lead in prime number searching make the Ultra 5 the choice for compute-heavy algorithmic workloads.

The Intel Core 7 251TE wins exactly one recorded benchmark: passmark integer math, 125,739 versus 123,030. That 2.2% margin is the only workload where the Core 7's 24 cores and 32 threads outperform the Ultra 5's 18 cores. The Core 7 also offers integrated UHD Graphics 770, meaning it can function without a discrete GPU, and its 45 W TDP suits low-power or thermally limited systems. Its dual-channel DDR4 support allows use with older, more affordable memory platforms, though the database records no performance advantage from that compatibility. The Core 7's higher boost clock of 5.40 GHz does not translate into any single-thread benchmark win.

For users prioritizing raw throughput, rendering speed, or single-thread performance, the data points exclusively to the Ultra 5 250KF Plus. For users needing an integrated GPU, low power draw, or DDR4 compatibility, the Core 7 251TE remains a functional option, but the recorded benchmarks show it trails the Ultra 5 by 40% or more in most tests. The integer math win is real but isolated, and it does not offset the Ultra 5's dominance across the broader benchmark suite.